The tech is there, as you noted, just needs better UX and wider adoption into clients. This is happening as we speak. Preliminary support for market listings was already added to Amethyst just recently.
Discussion
plebian.market needs email notifications. Somebody offered to buy my listing but by the time I saw it the offer was expired.
Getting an invalid cert error from that link :/
The UX definitely needs to be improved but the builders are building a better one.
I mispelled the link, it's plebeian.market. Left out the second e. I like that it runs on top of Nostr, but it isn't getting much use yet and there's no organization at all with the listings. They're all just randomly thrown in together in a huge list.